US20120139879A1 - Capacitive stylus pen - Google Patents
Capacitive stylus pen Download PDFInfo
- Publication number
- US20120139879A1 US20120139879A1 US13/299,858 US201113299858A US2012139879A1 US 20120139879 A1 US20120139879 A1 US 20120139879A1 US 201113299858 A US201113299858 A US 201113299858A US 2012139879 A1 US2012139879 A1 US 2012139879A1
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- US
- United States
- Prior art keywords
- body portion
- stylus pen
- capacitive stylus
- transferring
- manipulating
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Classifications
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/033—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor
- G06F3/0354—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor with detection of 2D relative movements between the device, or an operating part thereof, and a plane or surface, e.g. 2D mice, trackballs, pens or pucks
- G06F3/03545—Pens or stylus
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
- G06F3/0441—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using active external devices, e.g. active pens, for receiving changes in electrical potential transmitted by the digitiser, e.g. tablet driving signals
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
- G06F3/0442—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using active external devices, e.g. active pens, for transmitting changes in electrical potential to be received by the digitiser
Definitions
- the present invention relates to a stylus pen, and more particularly to a capacitive stylus pen available for manipulation of a capacitive touch screen.
- a stylus pen is a kind of tool for manipulating an electronic or communication device in which a touch screen is installed, such as a Personal Digital Assistant (PDA), a cellular phone, a palm Personal Computer (PC), etc.
- PDA Personal Digital Assistant
- a so-called tip formed at an end of the stylus pen contacts the touch screen
- the electronic or communication device operates responsively, essentially enabling an input of user desired information to the electronic or communication device.
- icons or menus are displayed on the touch screen, and upon user's selection of a desired icon or menu with the stylus pen, the electronic or communication device performs a corresponding function associated with the icon or menu.
- Touch screens may be classified into resistive touch screens and capacitive touch screens.
- the resistive touch screen generates an input signal by sensing a position on the touch screen at which a user applies a touching force causing contact between two resistive screen layers.
- the capacitive touch screen generates an input signal by sensing a position on the touch screen at which a user applies a touch causing a change in detected capacitance from a micro-current flowing through a user's body, i.e., the user's finger.
- the capacitive touch screen when compared to the resistive touch screen, provides a smoother manipulation feeling and action, e.g., scroll. For that matter, a capacitive touch screen allows for multi-touching contact and manipulation of various touch screen positions or points at the same time. Thus, the user may feel that a portable terminal using a capacitive touch screen is more elegant than a portable terminal using a resistive touch screen.
- resistive touch screens are responsive to an input signal from a user's manipulating force, they may be manipulated by use of other tools or body portions, such as a pen, a pencil, or a nail, as well as a finger.
- the capacitive touch screen operates by a human's micro-current, limiting manipulation using a general tool such as a pen or a pencil. This results in a need for a separate tool for manipulating the capacitive touch screen, such as a stylus pen, which is able to transfer the human's micro-current to the touch screen.
- NFC Near Field Communication
- the wireless headset has to be carried together with the portable terminal, and the portable terminal having a touch screen mounted thereon has to be accompanied by a separate stylus pen.
- effort has been exerted to integrate the stylus pen and the wireless headset.
- the stylus pen for manipulating the capacitive touch screen needs to be made of a conductive material to transfer the human's micro-current to the touch screen, such conductive material construction tends to hinder transmission and reception functions of the wireless headset.
- a portion made of synthetic resin as well as a portion made of the conductive material are added to the stylus pen. But these added portions have the effect of increasing the diameter or length of the stylus pen thus hindering miniaturization.
- an aspect of the present invention is to provide a stylus pen for a capacitive touch screen, which is easy to carry.
- Another aspect of the present invention is to provide a capacitive stylus pen which facilitates a wireless communication function even when having a wireless headset embedded therein.
- another aspect of the present invention is to provide a capacitive stylus pen which is easy to miniaturize even when having a wireless headset embedded therein.
- a capacitive stylus pen for a portable terminal.
- the capacitive stylus pen includes a body portion formed of a synthetic resin material, the body portion extending in a longitudinal direction, a sensing member provided in an inner side of the body portion to sense a current of a human's body, a transferring member formed of a conductive material and provided in an end of the body portion to be connected to the sensing member, and a manipulating member provided in an end of the transferring member that is manufactured of conductive rubber and contacts a touch screen according to user's manipulation.
- the sensing member may include a metal layer deposited on an inner circumferential surface of the body portion, or a conductive plate provided in the inner side of the body portion.
- the capacitive stylus pen may further include a binding hole provided in the end of the transferring member and a binding member provided in the end of the body portion. At least an end portion of the transferring member is inserted into the end of the body portion. The binding member is engaged with the binding hole to fix the transferring member to the body portion.
- the binding member may include a first screw engaged from an outer side of the body portion.
- the binding member may include a binding protrusion formed on the inner circumferential surface of the body portion.
- the capacitive stylus pen may further include a grip member coupled to enclose at least the transferring member between the body portion and the manipulating member.
- the grip member may be coupled to further enclose a portion of the body portion and a portion of the manipulating member.
- the grip member may be formed of a conductive material.
- the grip member may further include a first receiving portion for receiving a portion of the transferring member, a second receiving portion for receiving a portion of the manipulating member, and a barrier provided between the first receiving portion and the second receiving portion.
- the capacitive stylus pen may further include a second screw engaged to the transferring member from the second receiving portion through the barrier.
- the second screw may be formed of a conductive material, and the manipulating member may contact the second screw as the manipulating member is received in the second receiving portion.
- the capacitive stylus pen may further include a second transferring member disposed in the second receiving portion and a connecting member extending from the transferring member to the second receiving portion through the barrier, wherein the second transferring member is engaged to the connecting member.
- the second transferring member may be formed of a conductive material, and the manipulating member may be coupled to the second transferring member in the second receiving portion.
- a capacitive stylus pen for a portable terminal which includes: a body portion formed of a synthetic resin material and extending in a longitudinal direction; a conductive sensing member provided in an inner side of the body portion to sense a current of a human's body upon gripping the body portion; a transferring member formed of a conductive material and provided in an end of the body portion in connection with the sensing member; a manipulating member made of conductive rubber and provided in an end of the transferring member for pressing against and contacting a touch screen of the portable terminal; and a conductive grip member arranged to enclose the transferring member, a portion of the body portion and a portion of the manipulating member.
- FIG. 1 is a perspective view of a capacitive stylus pen according to an exemplary embodiment of the present invention
- FIG. 2 is a plane view of a body portion of a capacitive stylus pen shown in FIG. 1 ;
- FIG. 3 is a cross-sectional view of a capacitive stylus pen shown in FIG. 1 ;
- FIG. 4 is a plane view of a body portion of a capacitive stylus pen according to another exemplary embodiment of the present invention.
- FIG. 5 is a cross-sectional view of a capacitive stylus pen shown in FIG. 4 .
- a capacitive stylus pen 100 includes a body portion 101 , a sensing member 115 , a transferring member 102 , and a manipulating member 103 .
- the body portion 101 is manufactured of synthetic resin, and the sensing member 115 , the transferring member 102 , and the manipulating member 103 are manufactured of a conductive material, respectively.
- the body portion 101 is a portion which a user, when using the stylus pen 100 , substantially holds by hand.
- the body portion 101 may serve as a housing for receiving a Near Field Communication (NFC) device (not shown) such as Bluetooth module.
- NFC Near Field Communication
- the body portion 101 is preferably manufactured of a synthetic resin material.
- the body portion 101 is formed by coupling a front case 101 a and a rear case 101 b .
- a clip 117 and a fixing cap 119 are provided on an upper end portion of the body portion 101 .
- the clip 117 extends downward from the upper end portion of the body portion 101 to provide a means for allowing a user to have the stylus pen 100 on a collar, etc., when the user carries the stylus pen 100 .
- the fixing cap 119 covers and fixes upper end portions of the front case 101 a and the rear case 101 b which are coupled to each other.
- a 2-way key 111 is provided on an outer circumferential surface of the body portion 101 .
- the 2-way key 111 may be used as a volume control key.
- a through-hole 113 is formed in the front case 101 a.
- a transmitter and a receiver are provided on the outer circumferential surface of the body portion 101 in an opposite side to the clip 117 .
- the user wirelessly connects the portable terminal with the stylus pen 100 through the NFC device embedded in the body portion 101 to perform voice communication using the transmitter and the receiver.
- the stylus pen 100 is used as a hand-free device.
- the body portion 101 is manufactured of a synthetic resin material to allow the embedded NFC device to perform smooth transmission and reception with the portable terminal.
- the sensing member 115 is intended to sense a micro-current flowing through a user's body when the user uses the stylus pen 100 .
- the sensing member 115 is provided inside the body portion 101 and is manufactured of a conductive material.
- a metal layer is formed by depositing metal formed of a conductive material on an inner circumferential surface of the body portion 101 , or by attaching a metal foil formed of a conductive material onto the inner circumferential surface of the body portion 101 .
- a sensing member 115 is provided by simply disposing a conductive plate inside the body portion 101 . While the conductive plate may be a flat plate, the conductive plate may alternatively be formed with a curved surface to correspond to the shape of the inner circumferential surface of the body portion 101 , thus providing the sensing member 115 .
- the sensing member 115 is provided by forming the metal layer on the inner circumferential surface of the body portion 101 , more specifically, from a lower end portion of the body portion 101 , nearly to a center portion of the body portion 101 . This is intended to facilitate transmission and reception of electric waves when the NFC device is disposed inside the body portion 101 .
- the sensing member 115 is formed from the lower end portion to the center portion of the body portion 101 , and the NFC device is disposed on the upper end portion of the body portion 101 .
- the transferring member 102 is intended to electrically connect the manipulating member 103 to the sensing member 115 .
- the transferring member 102 is manufactured of a conductive material.
- An end of the transferring member 102 is inserted into an end of the body portion 101 , more specifically, a lower end of the body portion 101 .
- a binding hole is provided at the end of the transferring member 102 , and a binding member 129 a is provided in the body portion 101 .
- a first screw engaged from an outer side of the body portion 101 is used as the binding member 129 a .
- the binding member 129 a When the end of the transferring member 102 is inserted into the end of the body portion 101 , the binding member 129 a is engaged with the body portion 101 and the binding hole, thus fixing the transferring member 102 to the body portion 101 .
- the binding member 129 a is engaged with the binding hole which is not indicated by a reference numeral.
- the transferring member 102 is coupled with the body portion 101 and at the same time, connected to the sensing member 115 .
- the manipulating member 103 is manufactured of conductive rubber and is connected to another end of the transferring member 102 . Hence, the manipulating member 103 is electrically connected with the sensing member 115 through the transferring member 102 , and the micro-current of the user's body sensed by the sensing member 115 is transferred to the manipulating member 103 .
- the manipulating member 103 Since the manipulating member 103 has elasticity, it may be manufactured to enclose the transferring member 102 or the body portion 101 . In the current embodiment, a separate grip member 104 is provided to enclose a portion of the manipulating member 103 from the lower end portion of the body portion 101 .
- the grip member 104 is provided with a barrier 145 in an internal space thereof.
- a first receiving portion 141 and a second receiving portion 143 are formed in the internal space of the grip member 104 .
- the first receiving portion 141 receives the transferring member 102 , more specifically, the lower end portion of the body portion 101 .
- the second receiving portion 143 receives a portion of the manipulating member 103 .
- the stylus pen 100 further includes a second screw or binding member 129 b , which is engaged to the transferring member 102 from the second receiving portion 143 through the barrier 145 . As the second screw 129 b is engaged to the transferring member 102 through the barrier 145 , the grip member 104 is fixed to the body portion 101 .
- ribs coupled to an outer circumferential surface of the transferring member 102 are formed on an inner circumferential surface of the lower end portion of the body portion 101 , and the transferring member 102 is fixed to the body portion 101 by means of the binding member 129 a .
- the grip member 104 is fixed to the transferring member 102 by means of the second screw or binding member 129 b , such that the grip member 104 is fixed to the body portion 101 .
- the lower end portion of the body portion 101 is also received in the first receiving portion 141 , thereby providing a firm assembly structure.
- the manipulating member 103 is received in the second receiving portion 143 and contacts the second screw or binding member 129 b , thus being electrically connected to the transferring member 102 .
- the manipulating member 103 is arranged to enclose the lower end portion of the body portion 101 and connected to the transferring member 102 in an inner side thereof.
- the grip member 104 is installed to make the exterior of the stylus pen 100 more elegant.
- the grip member 104 is manufactured of a conductive material, the micro-current of the user's body is transferred directly to the manipulating member 103 when the user uses the stylus pen 100 while gripping the grip member 104 .
- the grip member 104 is manufactured of a conductive material, it does not hinder communication of the NFC device embedded in the body portion 101 because the grip member 104 is coupled to the lower end portion of the body portion 101 in the outer side of the body portion 101 .
- FIGS. 4 and 5 are views showing a capacitive stylus pen 200 according to another embodiment of the present invention.
- FIG. 4 is a plane view of a front case 201 a and a rear case 201 b of a body portion 201 .
- FIG. 5 is a cross-sectional view of the stylus pen 200 . It should be noted that the front case 201 a is removed from the stylus pen 200 in the cross-sectional view shown in FIG. 5 .
- the capacitive stylus pen 200 like in the previous embodiment, includes a body portion 201 , a sensing member 215 , a transferring member 202 , and a manipulating member 203 .
- the front case 201 a In the front case 201 a are formed a plurality of through-holes 211 a , 211 b , and 211 c , which provide spaces for disposing a transmitter, a receiver, a communication start/end key, a volume control key, etc., respectively.
- On the rear case 201 b is disposed a conductive plate as the sensing member 215 .
- capacitive coupling is formed between the user's body and the sensing member 215 , such that the sensing member 215 is conducted by the micro-current of the user's body.
- the transferring member 202 is inserted into the lower end portion of the body portion 201 to contact the sensing member 215 .
- a binding protrusion is formed as a binding member 229 a on the body portion 201 , and a binding hole 221 provided in an end of the transferring member 202 is engaged with the binding member 229 a .
- the transferring member 202 is fixed to the body portion 201 .
- an end of the transferring member 202 is disposed to be deposited together with the sensing member 215 .
- the manipulating member 203 is manufactured of conductive rubber and is arranged to enclose the transferring member 202 and the body portion 201 .
- the stylus pen 200 according to the current embodiment further includes a grip member 204 to realize an elegant exterior.
- the internal space of the grip member 204 is divided into a first receiving portion 241 and a second receiving portion 243 by a barrier 245 .
- a connecting member 223 extends to another end of the transferring member 202 .
- the connecting member 223 is positioned in the second receiving portion 243 through the barrier 245 .
- the manipulating member 203 is received in the second receiving portion 243 to contact the connecting member 223 .
- a second transferring member 229 b is preferably included to firmly fix the grip member 204 to the body portion 201 and provide stable electrical connection between the manipulating member 203 and the transferring member 202 .
- the second transferring member 229 b is engaged with the connecting member 223 in the second receiving portion 243 .
- the second transferring member 229 b is screw-coupled to the connecting member 223 .
- the second transferring member 229 b in the second receiving portion 243 pressurizes the barrier 245 toward the body portion 201 .
- the grip member 204 is fixed to the body portion 201 by means of the second transferring member 229 b while enclosing the transferring member 202 and the body portion 201 .
- the grip member 204 and the second transferring member 229 b are also manufactured of a conductive material.
- the manipulating member 203 when received in the second receiving portion 243 , is coupled to enclose the second transferring member 229 b , thus being interposed between an inner circumferential surface of the second receiving portion 243 and an outer circumferential surface of the second transferring member 229 b .
- the manipulating member 203 is manufactured of an elastic material.
- the manipulating member 203 forms a stable electrical connection structure with the second transferring member 229 b and is firmly fixed to the grip member 204 as long as the manipulating member 203 is maintained compressed to some degree when coupled to the second receiving portion 243 .
- the capacitive stylus pen is useful for manipulation of a capacitive touch screen because the micro-current of the human's body is transferred to the manipulating member through the sensing member or the grip member.
- the NFC device such as a Bluetooth module, is embedded in the body portion of the capacitive stylus pen to perform wireless communication with the portable terminal, thereby configuring a wireless headset with the capacitive stylus pen.
- the body portion is manufactured of a synthetic resin material, facilitating communication between the NFC device and the portable terminal.
- the sensing member for sensing the micro-current of the human's body is disposed only in a portion of the body portion. Hence, the stylus pen is easy to miniaturize even with the NFC device embedded therein and thus, simplifying accessories of the portable terminal.
- structures disclosed in the detailed embodiments of the present invention are exchangeable.
- the coupling structure between the first screw 129 b and the transferring member 102 may be replaced with the coupling structure between the second transferring member 229 b and the transferring member 202 .
- the transferring member, the manipulating member, and the grip member may be formed integrally as a single body.
- the manipulating member because of directly contacting the touch screen of the portable terminal, is preferably manufactured of a flexible material so not to damage the surface of the touch screen.
- the screw or protrusion in a form of a binding member is provided to fix the transferring member to the body portion
- soldering or welding also may be used as fixing or binding means, taking into account electrical connection between the transferring member and the sensing member.
- the body portion is manufactured of a synthetic resin material, care must be taken to avoid deforming the body portion during soldering or welding.
Abstract
Description
- This application claims the benefit under 35 U.S.C. §119(a) of a Korean Patent Application filed in the Korean Intellectual Property Office on Dec. 1, 2010 and assigned Serial No. 10-2010-0121219, the entire disclosure of which is hereby incorporated by reference.
- 1. Field of the Invention
- The present invention relates to a stylus pen, and more particularly to a capacitive stylus pen available for manipulation of a capacitive touch screen.
- 2. Description of the Related Art
- A stylus pen is a kind of tool for manipulating an electronic or communication device in which a touch screen is installed, such as a Personal Digital Assistant (PDA), a cellular phone, a palm Personal Computer (PC), etc. When a manipulating member, a so-called tip, formed at an end of the stylus pen contacts the touch screen, the electronic or communication device operates responsively, essentially enabling an input of user desired information to the electronic or communication device. In many related applications, icons or menus are displayed on the touch screen, and upon user's selection of a desired icon or menu with the stylus pen, the electronic or communication device performs a corresponding function associated with the icon or menu.
- The continued growth and popularity of portable terminals for mobile communication, e.g., Smartphone's and other hand-held electronic devices, as well as the increased commercialization of multimedia services accessed using portable terminals has seen a commensurate increase in the demand for various display devices and the input devices for inputting data therethrough. To meet such growing demands, and the demands for rendering the portable terminals more compact and lightweight, touch screens are increasingly used to operate concurrently both as an input device and a display device.
- Touch screens may be classified into resistive touch screens and capacitive touch screens. The resistive touch screen generates an input signal by sensing a position on the touch screen at which a user applies a touching force causing contact between two resistive screen layers. The capacitive touch screen generates an input signal by sensing a position on the touch screen at which a user applies a touch causing a change in detected capacitance from a micro-current flowing through a user's body, i.e., the user's finger. The capacitive touch screen, when compared to the resistive touch screen, provides a smoother manipulation feeling and action, e.g., scroll. For that matter, a capacitive touch screen allows for multi-touching contact and manipulation of various touch screen positions or points at the same time. Thus, the user may feel that a portable terminal using a capacitive touch screen is more elegant than a portable terminal using a resistive touch screen.
- As resistive touch screens are responsive to an input signal from a user's manipulating force, they may be manipulated by use of other tools or body portions, such as a pen, a pencil, or a nail, as well as a finger. On the other hand, the capacitive touch screen operates by a human's micro-current, limiting manipulation using a general tool such as a pen or a pencil. This results in a need for a separate tool for manipulating the capacitive touch screen, such as a stylus pen, which is able to transfer the human's micro-current to the touch screen.
- Moreover, with the combination of a multimedia function as well as a voice communication function in portable terminals, a need arises for the use of a wireless headset based on Near Field Communication (NFC), such as Bluetooth in such portable terminals.
- The wireless headset, however, has to be carried together with the portable terminal, and the portable terminal having a touch screen mounted thereon has to be accompanied by a separate stylus pen. In order to realize a compact and convenient solution to these requirements, effort has been exerted to integrate the stylus pen and the wireless headset. However, as the stylus pen for manipulating the capacitive touch screen needs to be made of a conductive material to transfer the human's micro-current to the touch screen, such conductive material construction tends to hinder transmission and reception functions of the wireless headset. In an effort to secure an installation space of the wireless headset, a portion made of synthetic resin as well as a portion made of the conductive material are added to the stylus pen. But these added portions have the effect of increasing the diameter or length of the stylus pen thus hindering miniaturization.
- Accordingly, an aspect of the present invention is to provide a stylus pen for a capacitive touch screen, which is easy to carry.
- Another aspect of the present invention is to provide a capacitive stylus pen which facilitates a wireless communication function even when having a wireless headset embedded therein.
- Moreover, another aspect of the present invention is to provide a capacitive stylus pen which is easy to miniaturize even when having a wireless headset embedded therein.
- According to an aspect of the present invention, there is provided a capacitive stylus pen for a portable terminal. The capacitive stylus pen includes a body portion formed of a synthetic resin material, the body portion extending in a longitudinal direction, a sensing member provided in an inner side of the body portion to sense a current of a human's body, a transferring member formed of a conductive material and provided in an end of the body portion to be connected to the sensing member, and a manipulating member provided in an end of the transferring member that is manufactured of conductive rubber and contacts a touch screen according to user's manipulation.
- The sensing member may include a metal layer deposited on an inner circumferential surface of the body portion, or a conductive plate provided in the inner side of the body portion.
- The capacitive stylus pen may further include a binding hole provided in the end of the transferring member and a binding member provided in the end of the body portion. At least an end portion of the transferring member is inserted into the end of the body portion. The binding member is engaged with the binding hole to fix the transferring member to the body portion.
- The binding member may include a first screw engaged from an outer side of the body portion. Alternatively, the binding member may include a binding protrusion formed on the inner circumferential surface of the body portion.
- The capacitive stylus pen may further include a grip member coupled to enclose at least the transferring member between the body portion and the manipulating member.
- The grip member may be coupled to further enclose a portion of the body portion and a portion of the manipulating member.
- The grip member may be formed of a conductive material.
- The grip member may further include a first receiving portion for receiving a portion of the transferring member, a second receiving portion for receiving a portion of the manipulating member, and a barrier provided between the first receiving portion and the second receiving portion.
- The capacitive stylus pen may further include a second screw engaged to the transferring member from the second receiving portion through the barrier.
- The second screw may be formed of a conductive material, and the manipulating member may contact the second screw as the manipulating member is received in the second receiving portion.
- The capacitive stylus pen may further include a second transferring member disposed in the second receiving portion and a connecting member extending from the transferring member to the second receiving portion through the barrier, wherein the second transferring member is engaged to the connecting member.
- The second transferring member may be formed of a conductive material, and the manipulating member may be coupled to the second transferring member in the second receiving portion.
- According to an aspect of the present invention, there is provided a capacitive stylus pen for a portable terminal which includes: a body portion formed of a synthetic resin material and extending in a longitudinal direction; a conductive sensing member provided in an inner side of the body portion to sense a current of a human's body upon gripping the body portion; a transferring member formed of a conductive material and provided in an end of the body portion in connection with the sensing member; a manipulating member made of conductive rubber and provided in an end of the transferring member for pressing against and contacting a touch screen of the portable terminal; and a conductive grip member arranged to enclose the transferring member, a portion of the body portion and a portion of the manipulating member.
- The above and other features and advantages of exemplary embodiments of the present invention will be more apparent from the following detailed description taken in conjunction with the accompanying drawings, in which:
-
FIG. 1 is a perspective view of a capacitive stylus pen according to an exemplary embodiment of the present invention; -
FIG. 2 is a plane view of a body portion of a capacitive stylus pen shown inFIG. 1 ; -
FIG. 3 is a cross-sectional view of a capacitive stylus pen shown inFIG. 1 ; -
FIG. 4 is a plane view of a body portion of a capacitive stylus pen according to another exemplary embodiment of the present invention; and -
FIG. 5 is a cross-sectional view of a capacitive stylus pen shown inFIG. 4 . - Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. A detailed description of known functions and configurations will be omitted when it may unnecessarily obscure the subject matter of the present invention.
- As shown in
FIGS. 1 through 3 , acapacitive stylus pen 100 according to an exemplary embodiment of the present invention (which will hereinafter be referred to as a ‘stylus pen’) includes abody portion 101, asensing member 115, a transferringmember 102, and a manipulatingmember 103. Thebody portion 101 is manufactured of synthetic resin, and thesensing member 115, the transferringmember 102, and the manipulatingmember 103 are manufactured of a conductive material, respectively. - The
body portion 101 is a portion which a user, when using thestylus pen 100, substantially holds by hand. Thebody portion 101 may serve as a housing for receiving a Near Field Communication (NFC) device (not shown) such as Bluetooth module. For smooth wireless communication between the NFC device received in thebody portion 101 and a portable terminal, thebody portion 101 is preferably manufactured of a synthetic resin material. - The
body portion 101 is formed by coupling afront case 101 a and arear case 101 b. On an upper end portion of thebody portion 101 are provided aclip 117 and a fixingcap 119. Theclip 117 extends downward from the upper end portion of thebody portion 101 to provide a means for allowing a user to have thestylus pen 100 on a collar, etc., when the user carries thestylus pen 100. The fixingcap 119 covers and fixes upper end portions of thefront case 101 a and therear case 101 b which are coupled to each other. - A 2-
way key 111 is provided on an outer circumferential surface of thebody portion 101. When an NFC device is embedded in thebody portion 101, through which thestylus pen 100 is configured as a wireless headset, the 2-way key 111 may be used as a volume control key. To install the 2-way key 111, a through-hole 113 is formed in thefront case 101 a. - Although not shown, a transmitter and a receiver are provided on the outer circumferential surface of the
body portion 101 in an opposite side to theclip 117. When the transmitter and the receiver are provided in thebody portion 101, the user wirelessly connects the portable terminal with thestylus pen 100 through the NFC device embedded in thebody portion 101 to perform voice communication using the transmitter and the receiver. In other words, by installing the NFC device, the transmitter, and the receiver in thebody portion 101, thestylus pen 100 is used as a hand-free device. As mentioned previously, thebody portion 101 is manufactured of a synthetic resin material to allow the embedded NFC device to perform smooth transmission and reception with the portable terminal. - The sensing
member 115 is intended to sense a micro-current flowing through a user's body when the user uses thestylus pen 100. To this end, the sensingmember 115 is provided inside thebody portion 101 and is manufactured of a conductive material. To provide thesensing member 115 inside thebody portion 101, a metal layer is formed by depositing metal formed of a conductive material on an inner circumferential surface of thebody portion 101, or by attaching a metal foil formed of a conductive material onto the inner circumferential surface of thebody portion 101. Alternatively, asensing member 115 is provided by simply disposing a conductive plate inside thebody portion 101. While the conductive plate may be a flat plate, the conductive plate may alternatively be formed with a curved surface to correspond to the shape of the inner circumferential surface of thebody portion 101, thus providing thesensing member 115. - In the current embodiment, the sensing
member 115 is provided by forming the metal layer on the inner circumferential surface of thebody portion 101, more specifically, from a lower end portion of thebody portion 101, nearly to a center portion of thebody portion 101. This is intended to facilitate transmission and reception of electric waves when the NFC device is disposed inside thebody portion 101. In other words, the sensingmember 115 is formed from the lower end portion to the center portion of thebody portion 101, and the NFC device is disposed on the upper end portion of thebody portion 101. - When the user holds the outer circumferential surface of the
body portion 101, corresponding to a portion in which thesensing member 115 is provided, capacitive coupling is formed between the user's body and thesensing member 115, such that thesensing member 115 is conducted by the micro-current of the user's body. - The transferring
member 102 is intended to electrically connect the manipulatingmember 103 to thesensing member 115. As mentioned previously, the transferringmember 102 is manufactured of a conductive material. An end of the transferringmember 102 is inserted into an end of thebody portion 101, more specifically, a lower end of thebody portion 101. A binding hole is provided at the end of the transferringmember 102, and a bindingmember 129 a is provided in thebody portion 101. In the current embodiment, a first screw engaged from an outer side of thebody portion 101 is used as the bindingmember 129 a. When the end of the transferringmember 102 is inserted into the end of thebody portion 101, the bindingmember 129 a is engaged with thebody portion 101 and the binding hole, thus fixing the transferringmember 102 to thebody portion 101. InFIG. 3 , the bindingmember 129 a is engaged with the binding hole which is not indicated by a reference numeral. Hence, the transferringmember 102 is coupled with thebody portion 101 and at the same time, connected to thesensing member 115. - The manipulating
member 103 is manufactured of conductive rubber and is connected to another end of the transferringmember 102. Hence, the manipulatingmember 103 is electrically connected with the sensingmember 115 through the transferringmember 102, and the micro-current of the user's body sensed by the sensingmember 115 is transferred to the manipulatingmember 103. - Since the manipulating
member 103 has elasticity, it may be manufactured to enclose the transferringmember 102 or thebody portion 101. In the current embodiment, aseparate grip member 104 is provided to enclose a portion of the manipulatingmember 103 from the lower end portion of thebody portion 101. - The
grip member 104 is provided with abarrier 145 in an internal space thereof. Afirst receiving portion 141 and asecond receiving portion 143 are formed in the internal space of thegrip member 104. Thefirst receiving portion 141 receives the transferringmember 102, more specifically, the lower end portion of thebody portion 101. Thesecond receiving portion 143 receives a portion of the manipulatingmember 103. Thestylus pen 100 further includes a second screw or bindingmember 129 b, which is engaged to the transferringmember 102 from thesecond receiving portion 143 through thebarrier 145. As thesecond screw 129 b is engaged to the transferringmember 102 through thebarrier 145, thegrip member 104 is fixed to thebody portion 101. - Although not specifically described, ribs coupled to an outer circumferential surface of the transferring
member 102 are formed on an inner circumferential surface of the lower end portion of thebody portion 101, and the transferringmember 102 is fixed to thebody portion 101 by means of the bindingmember 129 a. In addition, thegrip member 104 is fixed to the transferringmember 102 by means of the second screw or bindingmember 129 b, such that thegrip member 104 is fixed to thebody portion 101. Moreover, the lower end portion of thebody portion 101 is also received in the first receivingportion 141, thereby providing a firm assembly structure. - The manipulating
member 103 is received in thesecond receiving portion 143 and contacts the second screw or bindingmember 129 b, thus being electrically connected to the transferringmember 102. As previously mentioned, the manipulatingmember 103 is arranged to enclose the lower end portion of thebody portion 101 and connected to the transferringmember 102 in an inner side thereof. In a preferred embodiment, thegrip member 104 is installed to make the exterior of thestylus pen 100 more elegant. - If the
grip member 104 is manufactured of a conductive material, the micro-current of the user's body is transferred directly to the manipulatingmember 103 when the user uses thestylus pen 100 while gripping thegrip member 104. Although thegrip member 104 is manufactured of a conductive material, it does not hinder communication of the NFC device embedded in thebody portion 101 because thegrip member 104 is coupled to the lower end portion of thebody portion 101 in the outer side of thebody portion 101. -
FIGS. 4 and 5 are views showing acapacitive stylus pen 200 according to another embodiment of the present invention.FIG. 4 is a plane view of afront case 201 a and arear case 201 b of abody portion 201.FIG. 5 is a cross-sectional view of thestylus pen 200. It should be noted that thefront case 201 a is removed from thestylus pen 200 in the cross-sectional view shown inFIG. 5 . - The
capacitive stylus pen 200, like in the previous embodiment, includes abody portion 201, asensing member 215, a transferringmember 202, and a manipulatingmember 203. - In the
front case 201 a are formed a plurality of through-holes rear case 201 b is disposed a conductive plate as the sensingmember 215. As is mentioned above, when the user holds the outer circumferential surface of thebody portion 101, corresponding to a portion in which thesensing member 115 is provided, capacitive coupling is formed between the user's body and thesensing member 215, such that thesensing member 215 is conducted by the micro-current of the user's body. - The transferring
member 202 is inserted into the lower end portion of thebody portion 201 to contact thesensing member 215. A binding protrusion is formed as a bindingmember 229 a on thebody portion 201, and abinding hole 221 provided in an end of the transferringmember 202 is engaged with the bindingmember 229 a. Hence, the transferringmember 202 is fixed to thebody portion 201. When the transferringmember 202 is fixed to thebody portion 201, an end of the transferringmember 202 is disposed to be deposited together with the sensingmember 215. - Like in the previous embodiment, the manipulating
member 203 is manufactured of conductive rubber and is arranged to enclose the transferringmember 202 and thebody portion 201. Thestylus pen 200 according to the current embodiment further includes agrip member 204 to realize an elegant exterior. - The internal space of the
grip member 204 is divided into afirst receiving portion 241 and asecond receiving portion 243 by abarrier 245. A connectingmember 223 extends to another end of the transferringmember 202. The connectingmember 223 is positioned in thesecond receiving portion 243 through thebarrier 245. The manipulatingmember 203 is received in thesecond receiving portion 243 to contact the connectingmember 223. Asecond transferring member 229 b is preferably included to firmly fix thegrip member 204 to thebody portion 201 and provide stable electrical connection between the manipulatingmember 203 and the transferringmember 202. - The
second transferring member 229 b is engaged with the connectingmember 223 in thesecond receiving portion 243. Preferably, thesecond transferring member 229 b is screw-coupled to the connectingmember 223. When thesecond transferring member 229 b is completely coupled to the connectingmember 223, thesecond transferring member 229 b in thesecond receiving portion 243 pressurizes thebarrier 245 toward thebody portion 201. Thus, thegrip member 204 is fixed to thebody portion 201 by means of thesecond transferring member 229 b while enclosing the transferringmember 202 and thebody portion 201. Thegrip member 204 and thesecond transferring member 229 b are also manufactured of a conductive material. - The manipulating
member 203, when received in thesecond receiving portion 243, is coupled to enclose thesecond transferring member 229 b, thus being interposed between an inner circumferential surface of thesecond receiving portion 243 and an outer circumferential surface of thesecond transferring member 229 b. The manipulatingmember 203 is manufactured of an elastic material. The manipulatingmember 203 forms a stable electrical connection structure with thesecond transferring member 229 b and is firmly fixed to thegrip member 204 as long as the manipulatingmember 203 is maintained compressed to some degree when coupled to thesecond receiving portion 243. - The capacitive stylus pen, as described above, is useful for manipulation of a capacitive touch screen because the micro-current of the human's body is transferred to the manipulating member through the sensing member or the grip member. The NFC device, such as a Bluetooth module, is embedded in the body portion of the capacitive stylus pen to perform wireless communication with the portable terminal, thereby configuring a wireless headset with the capacitive stylus pen. The body portion is manufactured of a synthetic resin material, facilitating communication between the NFC device and the portable terminal. Moreover, the sensing member for sensing the micro-current of the human's body is disposed only in a portion of the body portion. Hence, the stylus pen is easy to miniaturize even with the NFC device embedded therein and thus, simplifying accessories of the portable terminal.
- While detailed embodiments has been described in the present invention, it would be obvious to those of ordinary skill in the art that various changes may be made without departing from the scope of the present invention.
- For example, structures disclosed in the detailed embodiments of the present invention are exchangeable. For example, the coupling structure between the
first screw 129 b and the transferringmember 102 may be replaced with the coupling structure between thesecond transferring member 229 b and the transferringmember 202. - Moreover, the transferring member, the manipulating member, and the grip member may be formed integrally as a single body. However, the manipulating member, because of directly contacting the touch screen of the portable terminal, is preferably manufactured of a flexible material so not to damage the surface of the touch screen.
- Furthermore, while it has been described that the screw or protrusion in a form of a binding member is provided to fix the transferring member to the body portion, soldering or welding also may be used as fixing or binding means, taking into account electrical connection between the transferring member and the sensing member. However, since the body portion is manufactured of a synthetic resin material, care must be taken to avoid deforming the body portion during soldering or welding.
Claims (20)
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KR1020100121219A KR101787750B1 (en) | 2010-12-01 | 2010-12-01 | Capacitive stylus pen |
KR10-2010-0121219 | 2010-12-01 |
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US20120139879A1 true US20120139879A1 (en) | 2012-06-07 |
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US13/299,858 Active 2032-06-20 US8842098B2 (en) | 2010-12-01 | 2011-11-18 | Capacitive stylus pen having transferring member partially within body portion |
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US8842098B2 (en) | 2014-09-23 |
KR101787750B1 (en) | 2017-10-19 |
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